Security door grill



FIG. 1 is a perspective view of a security door grill of our new design,with portions of the door structure and screen illustrated in brokenlines to provide environmental structure;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the security door grill that form nopart of the claimed design.

CLAIM The ornamental design for a security door grill, as shown anddescribed.